Improved chair-seat



l duaal Stime @sind @lattina CALVIN D. SMITH, 0F TEMPLETON, MASSACHUSETTS, ASSIGNOR TO HIM- SELF AND PETER C. SAWYER, OF SAME PLACE.

Letters Patent No. 101,671, dated April 5, 1870.

IMPROVE!) CHAIR-SEAT.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom t't may concern Be it known that I, CALvlN D. Snrrn, of Templeton, in the county of 'Worcester and Commonwealth of Massachusetts, have invented certain new and use, fnl Improvements in Chainseats; and I do hereby declare thatI the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing forming a part of this speciieation, in which- Figure l represents a perspective view of my inven-V tion, as applied to a chair-seat.

Figure 2 represents a plan view of the chair seat shown in fig. 1, with the covering removed; and

Figure 3 represents a transverse section thereof.

To enable those skilled in the art to which my i'nvention belongs to make and use the same, I will proceed-to describe it more in detail.

The `nature of my-invention consists in the combination with a chair-seat frame, provided with a circular or other shaped opening and concave groove, of an expanding seat-holding hoop', constructed to t said groove, and hold in place the cloth or other material of which the centlal portion of the seat is made, substantially' as hereafter described.

In the drawing, the part marked A represents the frame of a chair-seat, which is made in this instance in circular form, but which may be made in 'any other form if desired.

The inner edge of the frame A is made concave, as shown at a, the groove or concavity 'extending completely around the opening B.

Au expanding hoop, C, having a lap-joint, b, is made with a convex outer surface, d, to fit the concave groove a in the frame'A.

' By the use of the expanding hoop C, the cloth D, or

other material used to cover the opening B in theY chair-seat frame A, can be very convenient-ly and quickly secured in place, as indicated in ligs. 1 and 3.

In applying the material which forms the covering D, I rst attach the edges of the material to a skeleton hoop or frame about the size and shape of the opening in the seat-frame, then pass the material through the opening in the frame, after which the expanding hoop is passed through the frame, to which the edges .of the material are secured, its lap-joint!) allowing it to contract snfliciently to pass the projecting edge 2 of the seat-frame A, after which it is allowed to expand and till the concavity a, the cloth or other material D being held between the outer surface of the expanding holding-hoop C and the inner concave surface of the seat-frame A in such 'a mannelthat the material is stretched tant and smooth over the opening B, and also over the upper edge of the hoop C, fully indicated in the drawing.

After the hoop C has been properly adjusted in position as described, a few nails or pins 3 should be driven through the hoop C into the inner edge of the seat-frame, at suitable distances apart, to retain the hoop and covering in position when the chair is in use.

After the hoop C has been properly secured, the edge of the cloth D, or other covering, is trimmed otf flush with the bottom of the seat frame.

From the foregoing description it will be seen that my invention is of great practical value and importance, since-a chair-scat frame can be covered with woollen, cotton, and linen cloth, leather, cane and other suitable material, in a less expensive manner than by the modes heretofore practiced.

It will be understood that the seat-frame can be made in any desired shape, and attached to the chairframe in the usual manner; also, that Athe expanding hoop or holding-frame C is to be made to correspond in shape to the form of the opening in the seat-frame, whatever that may be.

Having described my improvements in chair-seats,

What I claim therein as new and of my invention, and desire to secure by Letters Patent, is-

The combination with a chair-seat frame, provided with a. circular or other shaped opening, and a concave groove, of an expanding seat-holding hoop or frame, constructed to t said groove, and hold the cloth or other covering material iu place, substantially as and for the purposes set forth.

CALVIN D. SMITH.

fitnessesz l. C. vSAwrER, S. CADY. 

